#sidebar 
{
  float: left;
  padding: 0 8px 0 0;
  border-color: maroon;
}

div#sidebar ul
{
  list-style:none;
  padding:2px;
  margin:0px; 
}

div#sidebar ul li
{
  font-size: 15px;
  padding: 13px;
  color: black;
  background-color: yellow;
  border-bottom:solid 4px;
  border-bottom-color: maroon;
  text-align:center;
}

div#sidebar ul li:hover{
  display:block;
  background-color:#CCFF33;
  padding:13px;
  text-align:center;
}
